Answer:
There are [tex]2.148\times 10^{23} atoms[/tex] of sodium.
Explanation:
Mass of sodium = 8.2 g
Molar mass of sodium = 22.99 g/mol
Moles of sodium = [tex]\frac{8.2 g}{22.99 g/mol}=0.3567 mol[/tex]
1 mole = [tex]N_A=6.022\times 10^{23} atoms[/tex]
Number of sodium atoms in 0.3567 moles = N
[tex]N=0.3567\times 6.022\times 10^{23} atoms=2.148\times 10^{23} atoms[/tex]
